EFFECTS OF TREATED MUNICIPAL WASTE WATER ON MELOIDOGYNE JAVANICA EGG HATCH AND PENETRATION

A. Al-Hazmi, M. A. El-Saeoy, A. T. Abdul-Razig

Abstract


Eggs of Meloidogyne javanica were exposed in vitro to increasing concentrations of treated municipal waste water CTMWW) aver a period of 8 days. Hatched juveniles (J2) were extracted and counted every 2 days. Juveniles that hatched from day 6 to day 8 were used as inoculum to determine their capability to invade tomato roots under greenhouse conditions. TMWW suppressed egg hatch at all concentrations, at least 4 days after incubation. After day 4 the hatch suppression was proportional to TMWW concentrations, or incubation period. Hatch suppressions C% of control) at day 8 were 11.3, 27.8, 34.4 and 51% at concentrations of 25,50,75, and 100% TMWW, respectively. Invasion of tomato roots by the hatched juveniles was not adversely affected.

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